was the key to their success. Why?.
Opal Matrix
ome opals have a banded growth of precious opal with matrix rock, and there can also be inclusions of matrix within the
Rainbow moonstone
Rainbow moonstone has a patchy, milky appearance, which comes from the white orthoclase layers and inclusions.
Jadeite Jade
Jadeite is a precious gem. In its pure form it is white, but it can also occur in a wide range of colours
Sillimanite
For some time, this tough, durable gemstone has been either considered a collector's stone or used industrially (in the
Size and Shape of Pearls
There are many different shapes and sizes of pearls depending on where the come from or what they are formed in.
Shell
You can saw it, file it, carve it, drill it and engrave it: shell is one of the easiest of materials to work with.
Malachite
Malachite was so popular in the 19th century that the Russian royal family panelled whole rooms with it, and the